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635 lines
25 KiB
JavaScript
635 lines
25 KiB
JavaScript
/**
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* bootstrap-multiselect.js
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* https://github.com/davidstutz/bootstrap-multiselect
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*
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* Copyright 2012, 2013 David Stutz
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*
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* Dual licensed under the BSD-3-Clause and the Apache License, Version 2.0.
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* See the README.
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*/
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!function($) {
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"use strict";// jshint ;_;
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if (typeof ko != 'undefined' && ko.bindingHandlers && !ko.bindingHandlers.multiselect) {
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ko.bindingHandlers.multiselect = {
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init : function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {},
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update : function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
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var ms = $(element).data('multiselect');
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if (!ms) {
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$(element).multiselect(ko.utils.unwrapObservable(valueAccessor()));
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}
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else if (allBindingsAccessor().options && allBindingsAccessor().options().length !== ms.originalOptions.length) {
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ms.updateOriginalOptions();
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$(element).multiselect('rebuild');
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}
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}
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};
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}
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function Multiselect(select, options) {
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this.options = this.mergeOptions(options);
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this.$select = $(select);
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// Initialization.
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// We have to clone to create a new reference.
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this.originalOptions = this.$select.clone()[0].options;
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this.query = '';
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this.searchTimeout = null;
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this.options.multiple = this.$select.attr('multiple') == "multiple";
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this.options.onChange = $.proxy(this.options.onChange, this);
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// Build select all if enabled.
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this.buildContainer();
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this.buildButton();
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this.buildSelectAll();
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this.buildDropdown();
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this.buildDropdownOptions();
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this.buildFilter();
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this.updateButtonText();
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this.$select.hide().after(this.$container);
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};
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Multiselect.prototype = {
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// Default options.
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defaults: {
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// Default text function will either print 'None selected' in case no
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// option is selected, or a list of the selected options up to a length of 3 selected options.
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// If more than 3 options are selected, the number of selected options is printed.
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buttonText: function(options, select) {
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if (options.length == 0) {
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return this.nonSelectedText + ' <b class="caret"></b>';
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}
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else {
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if (options.length > 3) {
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return options.length + ' ' + this.nSelectedText + ' <b class="caret"></b>';
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}
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else {
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var selected = '';
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options.each(function() {
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var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).html();
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selected += label + ', ';
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});
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return selected.substr(0, selected.length - 2) + ' <b class="caret"></b>';
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}
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}
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},
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// Like the buttonText option to update the title of the button.
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buttonTitle: function(options, select) {
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var selected = '';
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options.each(function () {
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selected += $(this).text() + ', ';
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});
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return selected.substr(0, selected.length - 2);
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},
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// Is triggered on change of the selected options.
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onChange : function(option, checked) {
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},
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buttonClass: 'btn',
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dropRight: false,
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selectedClass: 'active',
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buttonWidth: 'auto',
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buttonContainer: '<div class="btn-group" />',
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// Maximum height of the dropdown menu.
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// If maximum height is exceeded a scrollbar will be displayed.
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maxHeight: false,
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includeSelectAllOption: false,
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selectAllText: ' Select all',
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selectAllValue: 'multiselect-all',
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enableFiltering: false,
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enableCaseInsensitiveFiltering: false,
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filterPlaceholder: 'Search',
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// possible options: 'text', 'value', 'both'
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filterBehavior: 'text',
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preventInputChangeEvent: false,
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nonSelectedText: 'None selected',
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nSelectedText: 'selected'
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},
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// Templates.
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templates: {
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button: '<button type="button" class="multiselect dropdown-toggle" data-toggle="dropdown"></button>',
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ul: '<ul class="multiselect-container dropdown-menu"></ul>',
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filter: '<div class="input-group"><span class="input-group-addon"><i class="glyphicon glyphicon-search"></i></span><input class="form-control multiselect-search" type="text"></div>',
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li: '<li><a href="javascript:void(0);"><label><input /></label></a></li>',
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liGroup: '<li><label class="multiselect-group"></label></li>'
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},
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constructor: Multiselect,
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buildContainer: function() {
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this.$container = $(this.options.buttonContainer);
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},
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buildButton: function() {
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// Build button.
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this.$button = $(this.templates.button).addClass(this.options.buttonClass);
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// Adopt active state.
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if (this.$select.attr('disabled') == undefined) {
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this.$button.removeClass('disabled');
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}
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else {
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this.$button.addClass('disabled');
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}
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// Manually add button width if set.
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if (this.options.buttonWidth) {
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this.$button.css({
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'width' : this.options.buttonWidth
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});
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}
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// Keep the tab index from the select.
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var tabindex = this.$select.attr('tabindex');
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if (tabindex) {
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this.$button.attr('tabindex', tabindex);
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}
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this.$container.prepend(this.$button)
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},
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// Build dropdown container ul.
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buildDropdown: function() {
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// Build ul.
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this.$ul = $(this.templates.ul);
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if (this.options.dropRight) {
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this.$ul.addClass('pull-right');
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}
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// Set max height of dropdown menu to activate auto scrollbar.
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if (this.options.maxHeight) {
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// TODO: Add a class for this option to move the css declarations.
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this.$ul.css({
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'max-height': this.options.maxHeight + 'px',
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'overflow-y': 'auto',
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'overflow-x': 'hidden'
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});
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}
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this.$container.append(this.$ul)
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},
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// Build the dropdown and bind event handling.
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buildDropdownOptions: function() {
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this.$select.children().each($.proxy(function(index, element) {
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// Support optgroups and options without a group simultaneously.
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var tag = $(element).prop('tagName').toLowerCase();
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if (tag == 'optgroup') {
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this.createOptgroup(element);
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}
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else if (tag == 'option') {
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this.createOptionValue(element);
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}
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// Other illegal tags will be ignored.
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}, this));
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// Bind the change event on the dropdown elements.
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$('li input', this.$ul).on('change', $.proxy(function(event) {
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var checked = $(event.target).prop('checked') || false;
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var isSelectAllOption = $(event.target).val() == this.options.selectAllValue;
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// Apply or unapply the configured selected class.
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if (this.options.selectedClass) {
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if (checked) {
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$(event.target).parents('li').addClass(this.options.selectedClass);
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}
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else {
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$(event.target).parents('li').removeClass(this.options.selectedClass);
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}
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}
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// Get the corresponding option.
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var value = $(event.target).val();
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var $option = this.getOptionByValue(value);
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var $optionsNotThis = $('option', this.$select).not($option);
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var $checkboxesNotThis = $('input', this.$container).not($(event.target));
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// Toggle all options if the select all option was changed.
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if (isSelectAllOption) {
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$checkboxesNotThis.filter(function() {
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return $(this).is(':checked') != checked;
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}).trigger('click');
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}
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if (checked) {
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$option.prop('selected', true);
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if (this.options.multiple) {
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// Simply select additional option.
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$option.attr('selected', 'selected');
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}
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else {
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// Unselect all other options and corresponding checkboxes.
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if (this.options.selectedClass) {
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$($checkboxesNotThis).parents('li').removeClass(this.options.selectedClass);
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}
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$($checkboxesNotThis).prop('checked', false);
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$optionsNotThis.removeAttr('selected').prop('selected', false);
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// It's a single selection, so close.
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this.$button.click();
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}
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if (this.options.selectedClass == "active") {
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$optionsNotThis.parents("a").css("outline", "");
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}
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}
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else {
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// Unselect option.
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$option.removeAttr('selected').prop('selected', false);
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}
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this.updateButtonText();
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this.options.onChange($option, checked);
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this.$select.change();
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if(this.options.preventInputChangeEvent) {
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return false;
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}
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}, this));
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$('li a', this.$ul).on('touchstart click', function(event) {
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event.stopPropagation();
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$(event.target).blur();
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});
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// Keyboard support.
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this.$container.on('keydown', $.proxy(function(event) {
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if ($('input[type="text"]', this.$container).is(':focus')) {
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return;
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}
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if ((event.keyCode == 9 || event.keyCode == 27) && this.$container.hasClass('open')) {
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// Close on tab or escape.
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this.$button.click();
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}
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else {
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var $items = $(this.$container).find("li:not(.divider):visible a");
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if (!$items.length) {
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return;
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}
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var index = $items.index($items.filter(':focus'));
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// Navigation up.
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if (event.keyCode == 38 && index > 0) {
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index--;
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}
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// Navigate down.
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else if (event.keyCode == 40 && index < $items.length - 1) {
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index++;
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}
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else if (!~index) {
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index = 0;
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}
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var $current = $items.eq(index);
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$current.focus();
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if (event.keyCode == 32 || event.keyCode == 13) {
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var $checkbox = $current.find('input');
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$checkbox.prop("checked", !$checkbox.prop("checked"));
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$checkbox.change();
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}
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event.stopPropagation();
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event.preventDefault();
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}
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}, this));
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},
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// Will build an dropdown element for the given option.
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createOptionValue: function(element) {
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if ($(element).is(':selected')) {
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$(element).attr('selected', 'selected').prop('selected', true);
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}
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// Support the label attribute on options.
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var label = $(element).attr('label') || $(element).html();
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var value = $(element).val();
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var inputType = this.options.multiple ? "checkbox" : "radio";
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var $li = $(this.templates.li);
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$('label', $li).addClass(inputType);
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$('input', $li).attr('type', inputType);
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var selected = $(element).prop('selected') || false;
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var $checkbox = $('input', $li);
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$checkbox.val(value);
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if (value == this.options.selectAllValue) {
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$checkbox.parent().parent().addClass('multiselect-all');
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}
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$('label', $li).append(" " + label);
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this.$ul.append($li);
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if ($(element).is(':disabled')) {
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$checkbox.attr('disabled', 'disabled').prop('disabled', true).parents('li').addClass('disabled');
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}
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$checkbox.prop('checked', selected);
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if (selected && this.options.selectedClass) {
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$checkbox.parents('li').addClass(this.options.selectedClass);
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}
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},
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// Create optgroup.
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createOptgroup: function(group) {
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var groupName = $(group).prop('label');
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// Add a header for the group.
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var $li = $(this.templates.liGroup);
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$('label', $li).text(groupName);
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this.$ul.append($li);
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// Add the options of the group.
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$('option', group).each($.proxy(function(index, element) {
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this.createOptionValue(element);
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}, this));
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},
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// Add the select all option to the select.
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buildSelectAll: function() {
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var alreadyHasSelectAll = this.$select[0][0] ? this.$select[0][0].value == this.options.selectAllValue : false;
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console.log(this.options);
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// If options.includeSelectAllOption === true, add the include all checkbox.
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if (this.options.includeSelectAllOption && this.options.multiple && !alreadyHasSelectAll) {
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this.$select.prepend('<option value="' + this.options.selectAllValue + '">' + this.options.selectAllText + '</option>');
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}
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},
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// Build and bind filter.
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buildFilter: function() {
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// Build filter if filtering OR case insensitive filtering is enabled and the number of options exceeds (or equals) enableFilterLength.
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if (this.options.enableFiltering || this.options.enableCaseInsensitiveFiltering) {
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var enableFilterLength = Math.max(this.options.enableFiltering, this.options.enableCaseInsensitiveFiltering);
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if (this.$select.find('option').length >= enableFilterLength) {
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this.$filter = $(this.templates.filter).attr('placeholder', this.options.filterPlaceholder);
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this.$ul.prepend(this.$filter);
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this.$filter.val(this.query).on('click', function(event) {
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event.stopPropagation();
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}).on('keydown', $.proxy(function(event) {
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// This is useful to catch "keydown" events after the browser has updated the control.
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clearTimeout(this.searchTimeout);
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this.searchTimeout = this.asyncFunction($.proxy(function() {
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if (this.query != event.target.value) {
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this.query = event.target.value;
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$.each($('li', this.$ul), $.proxy(function(index, element) {
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var value = $('input', element).val();
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if (value != this.options.selectAllValue) {
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var text = $('label', element).text();
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var value = $('input', element).val();
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if (value && text && value != this.options.selectAllValue) {
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// by default lets assume that element is not
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// interesting for this search
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var showElement = false;
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var filterCandidate = '';
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if ((this.options.filterBehavior == 'text' || this.options.filterBehavior == 'both')) {
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filterCandidate = text;
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}
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if ((this.options.filterBehavior == 'value' || this.options.filterBehavior == 'both')) {
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filterCandidate = value;
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}
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if (this.options.enableCaseInsensitiveFiltering && filterCandidate.toLowerCase().indexOf(this.query.toLowerCase()) > -1) {
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showElement = true;
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}
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else if (filterCandidate.indexOf(this.query) > -1) {
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showElement = true;
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}
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if (showElement) {
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$(element).show();
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}
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else {
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$(element).hide();
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}
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}
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}
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}, this));
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}
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}, this), 300, this);
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}, this));
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}
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}
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},
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// Destroy - unbind - the plugin.
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destroy: function() {
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this.$container.remove();
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this.$select.show();
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},
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// Refreshs the checked options based on the current state of the select.
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refresh: function() {
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$('option', this.$select).each($.proxy(function(index, element) {
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var $input = $('li input', this.$ul).filter(function() {
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return $(this).val() == $(element).val();
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});
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if ($(element).is(':selected')) {
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$input.prop('checked', true);
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if (this.options.selectedClass) {
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$input.parents('li').addClass(this.options.selectedClass);
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}
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}
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else {
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$input.prop('checked', false);
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if (this.options.selectedClass) {
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$input.parents('li').removeClass(this.options.selectedClass);
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}
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}
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if ($(element).is(":disabled")) {
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$input.attr('disabled', 'disabled').prop('disabled', true).parents('li').addClass('disabled');
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}
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else {
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$input.removeAttr('disabled').prop('disabled', false).parents('li').removeClass('disabled');
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}
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}, this));
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this.updateButtonText();
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},
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// Select an option by its value or multiple options using an array of values.
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select: function(selectValues) {
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if(selectValues && !$.isArray(selectValues)) {
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selectValues = [selectValues];
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}
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for (var i = 0; i < selectValues.length; i++) {
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var value = selectValues[i];
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var $option = this.getOptionByValue(value);
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var $checkbox = this.getInputByValue(value);
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if (this.options.selectedClass) {
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$checkbox.parents('li').addClass(this.options.selectedClass);
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}
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$checkbox.prop('checked', true);
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$option.attr('selected', 'selected').prop('selected', true);
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this.options.onChange($option, true);
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}
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this.updateButtonText();
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},
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// Deselect an option by its value or using an array of values.
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deselect: function(deselectValues) {
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if(deselectValues && !$.isArray(deselectValues)) {
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deselectValues = [deselectValues];
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}
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for (var i = 0; i < deselectValues.length; i++) {
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var value = deselectValues[i];
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var $option = this.getOptionByValue(value);
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var $checkbox = this.getInputByValue(value);
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if (this.options.selectedClass) {
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$checkbox.parents('li').removeClass(this.options.selectedClass);
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}
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$checkbox.prop('checked', false);
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$option.removeAttr('selected').prop('selected', false);
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this.options.onChange($option, false);
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}
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this.updateButtonText();
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},
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// Rebuild the whole dropdown menu.
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rebuild: function() {
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this.$ul.html('');
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// Remove select all option in select.
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$('option[value="' + this.options.selectAllValue + '"]', this.$select).remove();
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// Important to distinguish between radios and checkboxes.
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this.options.multiple = this.$select.attr('multiple') == "multiple";
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this.buildSelectAll();
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this.buildDropdownOptions();
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this.updateButtonText();
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|
this.buildFilter();
|
|
},
|
|
|
|
// Build select using the given data as options.
|
|
dataprovider: function(dataprovider) {
|
|
var optionDOM = "";
|
|
dataprovider.forEach(function (option) {
|
|
optionDOM += '<option value="' + option.value + '">' + option.label + '</option>';
|
|
});
|
|
|
|
this.$select.html(optionDOM);
|
|
this.rebuild();
|
|
},
|
|
|
|
// Set options.
|
|
setOptions: function(options) {
|
|
this.options = this.mergeOptions(options);
|
|
},
|
|
|
|
// Get options by merging defaults and given options.
|
|
mergeOptions: function(options) {
|
|
return $.extend({}, this.defaults, options);
|
|
},
|
|
|
|
// Update button text and button title.
|
|
updateButtonText: function() {
|
|
var options = this.getSelected();
|
|
|
|
// First update the displayed button text.
|
|
$('button', this.$container).html(this.options.buttonText(options, this.$select));
|
|
|
|
// Now update the title attribute of the button.
|
|
$('button', this.$container).attr('title', this.options.buttonTitle(options, this.$select));
|
|
|
|
},
|
|
|
|
// Get all selected options.
|
|
getSelected: function() {
|
|
return $('option:selected[value!="' + this.options.selectAllValue + '"]', this.$select);
|
|
},
|
|
|
|
// Get the corresponding option by ts value.
|
|
getOptionByValue: function(value) {
|
|
return $('option', this.$select).filter(function() {
|
|
return $(this).val() == value;
|
|
});
|
|
},
|
|
|
|
// Get an input in the dropdown by its value.
|
|
getInputByValue: function(value) {
|
|
return $('li input', this.$ul).filter(function() {
|
|
return $(this).val() == value;
|
|
});
|
|
},
|
|
|
|
updateOriginalOptions: function() {
|
|
this.originalOptions = this.$select.clone()[0].options;
|
|
},
|
|
|
|
asyncFunction: function(callback, timeout, self) {
|
|
var args = Array.prototype.slice.call(arguments, 3);
|
|
return setTimeout(function() {
|
|
callback.apply(self || window, args);
|
|
}, timeout);
|
|
}
|
|
};
|
|
|
|
$.fn.multiselect = function(option, parameter) {
|
|
return this.each(function() {
|
|
var data = $(this).data('multiselect'), options = typeof option == 'object' && option;
|
|
|
|
// Initialize the multiselect.
|
|
if (!data) {
|
|
$(this).data('multiselect', ( data = new Multiselect(this, options)));
|
|
}
|
|
|
|
// Call multiselect method.
|
|
if ( typeof option == 'string') {
|
|
data[option](parameter);
|
|
}
|
|
});
|
|
};
|
|
|
|
$.fn.multiselect.Constructor = Multiselect;
|
|
|
|
// Automatically init selects by their data-role.
|
|
$(function() {
|
|
$("select[data-role=multiselect]").multiselect();
|
|
});
|
|
|
|
}(window.jQuery);
|